Quick-release device for wringers



W. ROBERTSON QUICK RELEASE DEVICE FOR WRINGERS Nov. 30 1926.

Filed 061:- 6. 1923 V Mum l w WWW Gite MW Patented Nov. 30, 1926.

UNITED STATES 1,608,531 PATET OFFICE.

VJILLIAM ROBERTSON, OF ERIE, PENNSYLVANIA, TU LOVELL IE'IANUFAC- TUBING COMPANY, F ERIE, PENNSYLVANIA, A CORPQRA'IIQN 0F PENNSYL- VANIA.

QUICK-RELEASE DEVICE "ESE VJRINGEES.

Application filed October 6, 1923. Serial No. 668,917.

This invention is designed to improve the construction of a safety release device as it is used on a wringer.

The invention is illustrated in the accompanying drawings as follows Fig. 1 shows a front elevation, partly in section, of a wringer.

Fig. 2 an enlarged plan view of a locking sleeve.

Fig. 3 a side elevation of the same.

Fig. 4 a plan View from the bottom of the operating handle. r

1 marks the wringer frame. This has the side stiles 2 and top piece 3. The wringer is provided with the usual upper wringer roll d and the lower wringer roll 5. The lower wringer roll 5 is journaled in bearings 6 in the frame and the upper wringer roll in bearings 7 in the frame. A spring 8 extends across the wringer and operates on the bearings 7 to exert pressure on the rolls. These parts are of usual construction.

A tension screw 9 rests on the spring 8 and extends through a stem 10, the stem being internally screw-threaded. The tension screw is adapted to give a range of tension for varying the tension on the rolls although a quick release device supplements the screw in effecting this tension.

A locking sleeve 11 extends through an opening 12 in the top bar 3. It has an extending flange 13 by means of which it is secured to the top. It is provided with locking shoulders 14.

An operating handle 15 is arranged on the top of the stem 10. It is provided with the projections 16 which are adapted to ere tend under and interlock with the shoulders 14.

The shoulders 1e are of slight extent circumferentially so that with the projections 16 in place a very slight movementof the handle 15 will move the projections out of engagement with the shoulders 14 and thus release the stem and pressure on the spring 8. This permits the wringer rolls to separate so as to relieve the pressure on the rolls, the purpose being the usual purpose of a safety release to relieve an operators hand should it be caught in the roll, or for any other purpose. It will be noted that the handles extend lengthwise of the frame into both sides of the stem and that the shoulders 14 and projections 16 will be released by a movement of the handles in either direction. Thus a quick and positive release is afforded with the operating handles turned in either direction.

In inserting the sleeve 11 through the opening 12 it is necessary to have clearance for the shoulders 1%. I provide a cone spondinglower projection 17' which fills the opening 12 at this point. These projections operating in the extensions in the openings 12 not only serve to fill these extensions which are necessary to permit the passage of the shoulders 14; in assembling the device but-also assist in locking the sleeve against turning.

In order that thespring 8 may be relieved of pressure in the ordinary use of the wringer by a mere turning of the handles I prefer to provide the shoulders i l with opposing cam surfaces 18 so that as the projections are turned under the shoulders H the stem is forced downwardly by the cam engaged by the projection. The cams do not interfere with the release inasmuch as the cams continue the turning of the handle 15 as soon as the projections 16 reach the cams so that all that is necessary to affect a release is to turn the projectio s off the central portion, or what might be termed the flat at the bottom of the shoulder.

hat I claim new is 1. In a quick release device for wringms the combination a wringer frame; rolls mounted on the frame; a spring exerting pressure on the rolls; a safety release device comprising a sleeve mounted on the frame; an external segmental shoulder on the sleeve; a stem rotatahly and slidingly mounted in the sleeve: a screw extending between the sleeve and spring and enfirting pressure on the spring; and a projection on the stem having an internal segmental shoalder interlocking with the shoulder on the sleeve, said shoulder on the projection being adapted to be released from engagement with the shoulder on the sleeve as the stem is turned.

2. In a quick release device for wrine ers the combination of a wringcr frame; r mounted on the frame; a spring efti'ertm )ressure on the rolls; a safety release device comprising a sleeve mounted on the frame; an external segmental shoulder on the sleeve; a stern rotatahly and slidingly mounted in the sleeve; a screw extendi between the sleeve and spring and exerting pressure on the spring; and a projection on the stem having an internal segmental shoulder interlocking With the shoulder on the sleeve, said shoulder on the projection being adapt ed to be released from engagement With the shoulder on the sleeve as the stem is turned, said interlocking shoulders being provided with a cam moving the stem axially to adjust the pressure on the rolls as the shoulder on the projection is turned to en gageinent Witl" the shoulder on the sleeve.

3. In a quick release device for Wringers,

the combination of a Wringer frame; rolls mounted. on the frame; a spring exerting pressure on said rolls; a safety release device mounted on the frame comprising a sleeve an external segmental shoulder on the sl eve; a stem rotatably and slidably mounted in the sleeve; a screw extending hetvv'een the sleeve and spring and exerting pressure on the spring; and a projection on the stem having an internal shoulder interlocking with the shoulder on the sleeve, said shoulders having a circumferential length permitting a release by movement in either direction.

4:. In a quick release device for Wringers, the combination of a Wringer frame; rolls mounted on the frame; spring exerting pressure on said rolls; a safety release device mo noted on the frame comprising a sleeve an external segmental shoulder on the sleeve; a stein rotatahly and slidably mounted in the sleeve; a screw extending between the sleeve and spring and exerting pressure on the spring; and a projection on the stern having a shoulder interlockii'ig with the shoulder on the sleeve, said shoulders being limited in length circumferentially to releas by movement of the stem in either direction and having opposing cams engaged as shoulders are moved into interlocking position moving the same in an axial direction to adjust the stem. 7

In testimony whereof I have hereunto set my hand. i

WILLIAM nonnn'rson. 

